Construction of promenades and playing-courts.



W. G. K. BIRKINSHAW`& C. A. BROWN.

CONSTRUCTION 0F PROMENADES AND PLAYING COURTS. APPLICATION HLEDFEB.1B,1914.

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` WILLIAM GEORGE KIRKLEY B'IRKINSHAW, or WoLvERHAMP'roN, AND CLAUDEARTHUR BROWN,` oF sYsToN, ENGnArrn.`

i -coNsrEUc'rIoN or PnoME'NAnEs AND IfLAYINe-.coroars.v

BROWN, 'subjects of the King of Great Britain, residing, respectively,at Wolverhampton, in the countyof Stafford, England, and Syston, in thecounty of Leicester,

' England, have invented certain new and useful Improvements Relating tothe Construction of Promenades and Playing-Courts, of which thefollowing is a speciication.

Our invention relates principally -to the l constructionof playingcourts for the games of lawn tennis, tennis, racket, badminton, bowls,lfives and the like, but is also applicable to the construction ofpromenades generally such for example as play grounds,

- garden paths, athletic and drillinggrounds,

and in fact to any open spaces where a irm set and practically dustlesssurface for foot passengers is desired.

The accompanying drawing is a sectional view, near one edge, of aplaying court constructed according to our invention.

AccordingV to our invention theA ground or site on which the promenadeor the like is to be constructed is, if the existing conformation of thesite renders it necessary, suitably eXcavated or leveled. The bottomlevel ofthe site, in the event of the soil being of a heavy nature isdrained by a system of main and branch drain pipes,`or by means of alayer of clinkers. Such drainage is however not required where the soilor sub-soil is of a naturally open or porous character, such for exampleas sand orgravel.

The bottom layer a of material which we employ consists of unscreenedashes of a thickness of about three inches. This is well rolledand onthe top of the same we put a layer ofone and a half inches of screenedashes obtained by passing the said ashes over a screen of a half tothree quarter inch mesh. IThis layer is also well rolled and the surfaceis afterward raked. On

this prepared ash surface we place a layer c of three quarters of aninch or thereabout i of burnt and screned brick earth, prefer ably burntboulder clay and marl 1n combination, the said burnt brick earth beinglSpecification of Letters Patent. v Application 1ed=February 18,1814.Serial No. 819,566.

about.

crushed and screened by passing it over a screen of a quarter of an inchmesh or therepowdered calcium chlorid or other deliques This material isthen sprinkled with- Patented May-18, 1915.

cent substance and is left for some'hours,

after which it is well lwatered and again rolled. Or `the material maybe watered with a solution of the deliquescent substance -V to be used.Thefinal-treatment consists in dusting the surface obtained with fineburnt brick earth the material employed being preferably that blown by afan through a v screen ofone sixteenth of an inch mesh.

The surface of burnt brick earth vand cal-` cium chlorid is indicated inthe drawing by the reference character d. From siX to ten dressings ofthe fine powdered burntbrick earth are given the surface beingthoroughly watered and well rolled after each dressing and a dressing ofcalcium chlorid'or other deliquescent substance may be employed after orwith one or more of the dressings of i p line burnt brick earth. p;

By the process hereinbefore described a very firm and smoothl surface isobtained which can be repaired or renewed from time to time by applyinga dressing of the fine `powdered burnt brick earth the renewed orrepaired surface being sprinkled with the powdered deliquescentsubstance and afterward watered and rolled or being watered with asolution of the deliquescent substance. vegetation from the surroundingsoilf, a border@ of suitable material, such as brick or concrete, may beprovided.

The herein-described process of construlovt-l ing 'playing grounds whichconsists in successively applying to the surface oflthe'selected siteavlayer of unscreened' ashes' of a thickness or depth of about three.inches, alayer of screened ashes of athickness or depth of about, oneand a half inches ob,- tained Vby passing the said ashes over a screenof a half to threel quarter inch mesh and a layer of screened burntbrick earth of a thickness or depth of about three quarters of an inch,.the said brick earth being screened in a'sieve of a quarter to an inchmesh or thercabouts, applying a dressing of To prevent the encroachmentof` deliquescent' substance to the liest "named l set oilrjlzatiids'in`layer, andbnally applyingaj dressing of' Witnesses x 4 powdered urntbrick ea'rth'tol the sur. ace thus dressed, 'the materia] for the lastnamed BIRKINSHAW'- 5 dressing beingpreferably obtained-by bloW-4 .r .v

ing the material through a sieve of one siX- l Witnesses; l teenth of aninch mesh. WALTERv W. BALL,

In testimony whereof We .have hereunto.l Hoon.

pre'sexiceoftwo subsoriiyiixg" p

